ThePVC butututsari ya ƙunshi: PVC guduro, tasiri mai gyara, stabilizer, sarrafa mai gyara, filler, pigment da kuma waje man shafawa.
1. PVC guduro
Domin samun saurin robobi iri ɗaya, yakamata a yi amfani da hanyar dakatarwa don sassauta guduro.
--The resin da aka yi amfani da shi don bututun bango na bango biyu ya kamata ya zama kyawawan kayan aikin ƙwanƙolin bututun kuma ku guji rushewar bangon bututun.
--The resin da aka yi amfani da su don samar da ruwa na ruwa ya kamata ya kasance da "tsarkakakken aji", da kuma ragowar villide a cikin resin ya kamata a cikin 1 MG / kg.Domin tabbatar da ingancin bututu da kuma rage rashin lahani, tushen resin ya kamata ya kasance mai ƙarfi.
2. Stabilizer
A halin yanzu, manyan na'urorin daidaita yanayin zafi da ake amfani da su a kasar Sin su ne: sabulun karfe, na'urorin sarrafa gishiri mai hade da gubar, na'urorin da ba kasafai ba, da na'urorin sarrafa kwano.
Stabilizers dauke da manyan karafa (kamar Pb, Ba, Cd) suna da illa ga lafiyar ɗan adam, kuma adadin waɗannan na'urori a cikin samar da bututun ruwa yana da iyaka.A cikin tsarin cirewa guda ɗaya, tarihin dumama na kayan ya fi tsayi fiye da haka a cikin tsarin extrusion na tagwaye, kuma adadin stabilizer a cikin tsohon ya karu da fiye da 25%.Yanayin zafin jiki na kan bututu mai bango biyu ya fi girma, kayan yana tsayawa a cikin kai na dogon lokaci, kuma adadin ma'auni a cikin dabarar ya fi na tsarin bututu na yau da kullun.
3. Filler
Matsayin masu cikawa shine rage farashi.Gwada amfani da filaye masu inganci masu inganci (farashi mafi girma).Adadin kayan bututu ya fi girma fiye da bayanan martaba.Matsakaicin adadin filler zai haifar da juriya mai tasiri don ragewa da juriya na bututu don ragewa.Don haka, a cikin bututun sinadarai da bututun samar da ruwa, adadin filler a Kasa da kwafi 10.Adadin filler a cikin bututun magudanar ruwa da hannun rigar rigar sanyi na iya zama ƙari, kuma ana iya ƙara adadin CPE don canza raguwar tasirin tasiri.
Don bututu tare da ƙananan buƙatu don aikin bututu, da bututun ruwan sama, adadin filler na iya zama babba, amma lalacewa na tagwayen-screw extruder yana da tsanani.
4. Mai gyarawa
(1) Gyaran sarrafawa: ana iya amfani da bututu na yau da kullun ko a'a;Ana amfani da bututun corrugated da kuma bututun sirara masu katanga.
(2) Mai gyara tasiri: ƙasa da sashi fiye da bayanan martaba, saboda dalilai guda biyu: 1. Aiki, ƙarancin zafin jiki, ƙarfin ƙarfi 2. Kudin
(3) Sauran additives, launuka, da dai sauransu: Lokacin da aka yi amfani da bayanin martaba azaman wakili na rigakafin tsufa, dole ne a ƙara titanium dioxide.Tsarin bututun PVC mai ƙarfi shine mafi yawan launi, galibi titanium dioxide ko baƙin carbon, wanda za'a iya zaɓa bisa ga buƙatun bututun.
5. Daidaitawar mai mai na waje da stabilizer
(1) Zaɓi madaidaicin mai na waje bisa ga stabilizer
a.Organotin stabilizer.Matsakaicin kwano na kwayoyin halitta yana da dacewa mai kyau tare da resin PVC, kuma yana da mummunan hali don manne wa bangon karfe.Mafi arha mai na waje wanda yayi daidai da shi shine tsarin paraffin-calcium stearate na tushen paraffin.
b.Gubar gishiri stabilizer.Mai daidaita gishirin gubar yana da rashin daidaituwa tare da resin PVC, kuma kawai yana mannewa saman ɓangarorin PVC, wanda ke hana haɗuwa tsakanin sassan PVC.Yawancin lokaci, gubar stearate-calcium stearate na waje mai mai na waje ana amfani dashi don daidaita shi.
(2) Yawan man shafawa na waje.Idan daidaita yawan adadin man shafawa na waje har yanzu ba zai iya biyan buƙatun sarrafa kayan aiki ba, zaku iya la'akari da ƙara ƙaramin adadin mai na ciki.Lokacin da aka yi amfani da gyare-gyaren tasiri mai ƙarfi, saboda babban danko mai narkewa, yiwuwar mannewa a saman karfe yana da girma, kuma adadin man shafawa na waje sau da yawa yana buƙatar ƙarawa;Bututu mai kauri yana buƙatar ƙarin mai na waje.Lokacin da yawan zafin jiki na aiki ya yi girma, yanayin narke don mannewa saman karfe yana da girma, kuma ana ƙara ƙarin man shafawa na waje.
Yaya ake yin bututun PVC?
Ana kera bututun PVC ta hanyar extrusion na albarkatun kasa na PVC, kuma gabaɗaya suna bin matakai iri ɗaya na ayyukan extrusion na bututu:
- Ciyar da albarkatun kasa pellets / foda a cikin tagwayen dunƙule na PVC
- Narkewa da dumama a wurare masu yawa na extruder
- Fitarwa ta hanyar mutuwa don su zama bututu
- Kwantar da bututu mai siffa
- Yanke bututun PVC zuwa tsayin da ake so
Lokacin aikawa: Jul-04-2022